diff --git a/test/unit_test/static/usc_test.cpp b/test/unit_test/static/usc_test.cpp
index b55d02fad..c4e35e9e4 100644
--- a/test/unit_test/static/usc_test.cpp
+++ b/test/unit_test/static/usc_test.cpp
@@ -124,6 +124,6 @@ static_assert(isq::mass(1 * lb_t) == isq::mass(12 * oz_t));
 static_assert(isq::pressure(1'000 * inHg) == isq::pressure(3'386'389 * si::pascal));
 
 // Temperature
-static_assert(isq::thermodynamic_temperature(5 * deg_F) == isq::thermodynamic_temperature(9 * si::degree_Celsius));
+static_assert(isq::thermodynamic_temperature(9 * deg_F) == isq::thermodynamic_temperature(5 * si::degree_Celsius));
 
 }  // namespace